McIntosh MAC 4200

OUTPUT SIGNAL WAVEFORM SHOWING ACTION
OF POWER GUARD TO ELIMINATE OUTPUT SIGNAL
CLIPPING. POWER AMPLIFIER INPUT IS OVERDRIVEN BY
20 dB FOR BOTH OSCILLOGRAM TRACES.
PERFORMANCE CHARTS 19
Time
-60
-70
OUTPUT
SIGNAL
AMPLITUDE
OUTPUT
LEVEL
IN dB
-20
-30
-40
-50
100 1k
FREQUENCY IN HERTZ
10k 20k
2(1
+ 10
0
-10
-20
-30
-40
-50
-60
-70
LEVEL
IN dB
30 40 50 60 70
INPUT LEVEL IN dBF
FM FREQUENCY RESPONSE
AND STEREO SEPARATION
8O 90 100 0 10 20
100 1k
FREQUENCY IN HERTZ
FM PERFORMANCE, 98 MHz 1kHz MODULATION
10k 20k
20
20
10
0
-10
-20
RESPONSE
IN dB
FREQUENCY RESPONSE OF
EQUALIZER FREQUENCY CONTROLS
SET AT MAXIMUM AND MINIMUM